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Unable to generate an explicit migration in entity framework
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It tells you that there is some unprocessed migration in your application and it requires running Update-Database before you can add another migration.
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C++ Const Usage Explanation
...means that the function Method3 does not modify the non mutable members of its class.
const int* const means a constant pointer to a constant int: i.e. a pointer that cannot be changed, to an int that cannot be changed: the only difference between this and const int& is that it can be null
con...
Get the IP address of the machine
...r to linux). However getifaddress() will let you do the same thing easily, it works fine for me on os x 10.5 and should be the same below.
I've done a quick example below which will print all of the machine's IPv4 address, (you should also check the getifaddrs was successful ie returns 0).
I've up...
How do I get my Maven Integration tests to run
...ve a maven2 multi-module project and in each of my child modules I have JUnit tests that are named Test.java and Integration.java for unit tests and integration tests respectively. When I execute:
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What's the point of 'const' in the Haskell Prelude?
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It's useful for passing to higher-order functions when you don't need all their flexibility. For example, the monadic sequence operator >> can be defined in terms of the monadic bind operator as
x >> y = x >&g...
Working with huge files in VIM
I tried opening a huge (~2GB) file in VIM but it choked. I don't actually need to edit the file, just jump around efficiently.
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How to do exponentiation in clojure?
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classic recursion (watch this, it blows stack)
(defn exp [x n]
(if (zero? n) 1
(* x (exp x (dec n)))))
tail recursion
(defn exp [x n]
(loop [acc 1 n n]
(if (zero? n) acc
(recur (* x acc) (dec n)))))
functional
(defn exp ...
Python JSON serialize a Decimal object
...) in the next line,
# but that would mean a yield on the line with super(...),
# which wouldn't work (see my comment below), so...
return (str(o) for o in [o])
return super(DecimalEncoder, self).default(o)
Then use it like so:
json.dumps({'x': decimal.Dec...
Reverting to a specific commit based on commit id with Git? [duplicate]
With git log , I get a list of commits that I have made so far.
4 Answers
4
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Why wasn't PyPy included in standard Python?
I was looking at PyPy and I was just wondering why it hasn't been adopted into the mainline Python distributions. Wouldn't things like JIT compilation and lower memory footprint greatly improve the speeds of all Python code?
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